🤲 Of wrist bone 💪 Of shoulder muscle

trapezial

8.9

At the base of the thumb where a small wrist bone is

adjective
/trəˈpiːziəl/

Specialized

: trapezial

In anatomical studies, the trapezial bone plays a crucial role in thumb movement and grip strength.
trapezial excision
trapezial height
trapezial bone

Examples

The surgeon explained that the trapezial region is vital for stabilizing the base of the thumb.
Osteophytes are removed from the joint, and the positions of the Artelon wings are marked on the dorsal cortex of the trapezial and metacarpal bones.

Academic text (2011)
They revealed no significant change in the trapezial height ratio and a significant (26%) improvement in grip strength.

Academic text (2011)
Studies have shown a 27% to 33% loss of the trapezial space ratio compared with presurgical values when using the LRTI technique (28).

Academic text (2011)
They also revealed a 33% decrease in the trapezial height ratio compared with preoperative values (1, 30).

Academic text (2011)
Although interposition is performed in an attempt to prevent subluxation, it has been suggested that the LRTI procedure may not maintain trapezial height and, thus, not fully restore thumb strength.

Academic text (2011)
An open surgery is used more frequently in patients with significant trapezial subluxation because the wings of the Artelon implant are used to stabilize the CMC joint (13).

Academic text (2011)
It is used to resurface the trapezial side adjacent to the first metacarpal and to stabilize the CMC joint by augmenting the joint capsule (14).

Academic text (2011)
Creighton et al. (17) observed 151 silicone trapezial arthroplasties and reported a 56% incidence of scaphoid cysts.

Academic text (2011)
Surgeons often analyze the trapezial height during wrist surgeries to ensure proper alignment.

Surface Forms

trapezial positive

Morphology

trapezial = trapezium (transparent) = trapezi + al

This is a regular adjectival formation meaning 'relating to the trapezium', so the sense follows directly from the base word.

Etymology

Trapezial comes from the bone name trapezium, which in Greek meant 'little table' because it is a small, four-sided bone. So trapezial refers to the area near that wrist bone at the base of the thumb.